Earlier this week Wilson posted a video online showing a single shot being fired from "The Liberator, " a plastic handgun that, with the exception of a metal firing pin and a piece of metal included to comply with the Undetectable Firearms Act, was assembled entirely from parts made with a 3-D printer.

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Owen had an operation in Manchester to insert a metal pin in his broken foot on 3 January.

BBC: WHEN THE INJURIES HAPPENED

Having delayed an operation to remove a metal pin from his ankle after suffering a fractured dislocation a year ago, Cipriani is hoping his fortune can soon turn around.

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It was assembled from separate printed components made from ABS plastic - only the firing pin was made from metal.

BBC: Working gun made with 3D printer

It was Major General Nathaniel Coles' hat that made the boldest statement: a beaverskin chapeau de bras, with a black silk grosgrain ribbon cockade, gilt-metal eagle pin and 20-inch ostrich feather plume.

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Trailers are typically attached to tractors by a "fifth wheel, " in which a coupling pin on the trailer fits into the center of a large horseshoe-shaped piece of metal.

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